This is a test form for basic regular expression matching.
The basic pattern for a regular expression is a sequence of literal characters. The pattern must be delimited at the start and end of the pattern with the forward slash character: '/'.
The basic mode of matching is a case sensitive match. This means that a pattern such as:
/and/ will match the bolded characters in the subject string: "You and the plane have landed."
The pattern /and/ will not match in this subject string: "And Andrew was waiting for you."
You can enter patterns and subject strings in the text entry boxes, and click the "Test!" button to run the match. The "Load Sample Text" buttons will fill some sample text values into the form.